remove_query_param
Remove a query parameter from a URL.
This record as markdown: /tools/io-tinyfn-tinyfn/remove-query-param.md
What remove_query_param does on TinyFn
AI agents use remove_query_param to create or update resources in TinyFn, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your TinyFn environment.
| Parameter | Type | Required | Description |
|---|---|---|---|
key | string | Yes | Parameter key to remove |
url | string | Yes | URL to modify |
Parameters from the server's own tool schema.
Why remove_query_param is rated Medium
This tool modifies a URL string by removing a query parameter. It's a string transformation operation with no persistent side effects - it returns a modified URL string. Classified as Write since it alters data (the URL), though the blast radius is very low as it only manipulates a string value in memory with no external system interaction.
From the tool's definition 'Remove a query parameter from a URL' - modifies a URL string by removing a parameter
Risk signalsAccepts URL/endpoint input (url)
Attacks that exploit this kind of access
The rule that runs remove_query_param safely
PolicyLayer is an MCP gateway: it sits between your AI agents and TinyFn, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For remove_query_param, this is the rule to start with:
remove_query_param stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect TinyFn, apply this rule, and every remove_query_param call is checked against it from then on.
Questions about remove_query_param
Remove a query parameter from a URL. It is categorised as a Write tool in the TinyFn MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
remove_query_param accepts 2 parameters: key, url. Required: key, url. The full parameter table on this page comes from the server's own tool schema.
Register the TinyFn MCP server in PolicyLayer and add a rule for remove_query_param: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches TinyFn. Nothing to install.
remove_query_param is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the remove_query_param rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for remove_query_param. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
remove_query_param is provided by the TinyFn MCP server (https://api.tinyfn.io/mcp/all/). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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